A spinal grinding device

Abstract

The present invention discloses a spinal grinding head device, comprising a motor assembly, a transition assembly, a protection assembly and a grinding head, wherein the motor assembly is detachably connected to the transition assembly, the transition assembly is detachably connected to the protection assembly, the protection assembly is used to support the grinding head, the grinding head is detachably connected to the protection assembly, and the axial position of the grinding head connected to the protection assembly is adjustable, and the motor assembly is used to drive the grinding head to rotate. The spinal grinding head device has strong applicability and versatility, and is conducive to reducing the use cost.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a spinal grinding head device. Background Art

[0002] At present, during orthopedic surgery, it is sometimes necessary to grind or drill bone tissue in the body. In the existing technology, grinding is generally performed by directly driving the grinding head with a motor. The motor part, support part and grinding head in the existing spinal grinding head equipment are generally fixed, and the length of the grinding head cannot be adjusted, which has poor adaptability and cannot meet the needs of surgery. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a spinal grinding head device to solve the technical problems raised by the background technology.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A spinal grinding head device includes a motor assembly, a transition assembly, a protective assembly and a grinding head, wherein the motor assembly is detachably connected to the transition assembly, the transition assembly is detachably connected to the protective assembly, the protective assembly is used to support the grinding head, the grinding head is detachably connected to the protective assembly, and the axial position of the grinding head connected to the protective assembly is adjustable, and the motor assembly is used to drive the grinding head to rotate.

[0006] Furthermore, the protection component includes a grinding head protection cover, a grinding head main body cover connected to the grinding head protection cover, a grinding head locking shaft internally sleeved in the grinding head protection cover, and a transmission rod arranged in the grinding head main body cover; the transition component includes a transition main body cover; the motor component includes a motor housing, a motor arranged in the motor housing, and a transmission shaft connected to the motor; one end of the transmission shaft extending into the transition main body cover is provided with a first clamping structure; one end of the transmission rod is axially inserted into the first clamping structure and is detachably connected by the first clamping structure; the other end of the transmission rod is movably connected to one end of the grinding head locking shaft; the other end of the grinding head locking shaft is provided with a second clamping structure; one end of the grinding head is axially inserted into the second clamping structure and is detachably connected by the second clamping structure.

[0007] Further, the first clamping structure includes a first locking torsion sleeve, a first movable sleeve, a first clamping piece and a first elastic element, the first locking torsion sleeve can be rotatably sleeved on the transition main sleeve, the first clamping piece is clamped on the transmission shaft, one end of the first clamping piece is provided with a first elastic clamp for clamping the transmission rod, the first elastic element is sleeved on the first clamping piece and can press the first elastic clamp, the first movable sleeve is movably sleeved on the first elastic element, and one end of the first movable sleeve is abutted against one end of the first elastic element, one end of the first movable sleeve can be axially moved in a direction close to the first elastic clamp under the linkage of the first locking torsion sleeve to drive the first elastic element away from the first elastic clamp, and the first elastic element is used to provide a first elastic stress that prompts the first movable sleeve to move in a direction close to the first elastic clamp so that the first elastic element presses the first elastic clamp.

[0008] Furthermore, the first clamping structure also includes a first ball, the outer wall of the first movable sleeve is provided with a first ball groove for placing the first ball, the transition main sleeve is provided with a first spiral groove for cooperating with the first ball, and the inner wall of the first locking torsion sleeve is provided with a first slide groove adapted to the first ball, the ball is clamped in the first slide groove, and the first ball can slide along the first spiral groove under the linkage of the first locking torsion sleeve to drive the first movable sleeve to move axially.

[0009] Further, the second clamping structure comprises a second locking and twisting sleeve, a second movable sleeve, a second clamping piece, a locking sleeve, and a second elastic element; the second locking and twisting sleeve is rotatably sleeved on the grinding head main body sleeve, the second movable sleeve is movably sleeved on the transmission rod, the transmission rod is provided with an abutting portion abutting against the second movable sleeve, the second movable sleeve can axially move under the linkage of the second locking and twisting sleeve and drive the transmission rod to move axially; the second clamping piece is clamped on the grinding head locking shaft, and one end of the second clamping piece is provided with a second elastic chuck for clamping the grinding head, the locking sleeve is movably sleeved on the second clamping piece, and one end of the locking sleeve can cooperate with the inclined surface of the second elastic chuck to clamp the grinding head; A movable groove is provided at one end of the grinding head locking shaft, a slider for connecting with the locking sleeve is provided in the movable groove, and the other end of the transmission rod is movably inserted into the movable groove and can push the slider to move axially so that the locking sleeve is away from the second elastic clamp; the second elastic element is sleeved on the grinding head locking shaft, and one end of the second elastic element abuts against the slider, and the second elastic element is used to provide a second elastic stress that causes one end of the locking sleeve to move in a direction close to the second elastic clamp, so that one end of the locking sleeve pushes the second elastic clamp; the locking sleeve is also provided with an opening, and the second elastic clamp can pop out in the direction of the opening when the front end of the locking sleeve moves away from the second elastic clamp.

[0010] Furthermore, the second clamping structure also includes a second ball, the outer wall of the second movable sleeve is provided with a second ball groove for placing the second ball, the grinding head main body sleeve is provided with a second spiral groove for cooperating with the second ball, and the inner wall of the second locking torsion sleeve is provided with a second slide groove adapted to the second ball, the second ball is clamped in the second slide groove, and the second ball can slide along the second spiral groove under the linkage of the second locking torsion sleeve to drive the second movable sleeve to move axially.

[0011] Furthermore, the transition main body sleeve is clamped with a U-shaped spring piece, one end of the U-shaped spring piece is provided with a clamping piece, and the inner wall of the first locking torsion sleeve is provided with an arc groove clamped with the clamping piece; the U-shaped spring piece is provided with a clamping groove, the grinding head main body sleeve is provided with a main body cover, and the main body cover is provided with clamping teeth for clamping with the clamping groove.

[0012] Furthermore, the motor is detachably installed in the motor housing, and the motor housing is threadedly connected to the transition body sleeve.

[0013] Furthermore, the motor is a brushless motor.

[0014] Furthermore, the protection component also includes a locking connection sleeve for connecting the grinding head protection sleeve and the grinding head main body sleeve, and the locking connection sleeve can be rotatably sleeved on the grinding head protection sleeve and can lock the grinding head protection sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By making the motor assembly and the transition assembly detachably connected, the transition assembly and the protection assembly detachably connected, and the grinding head detachably connected to the protection assembly, the same motor assembly can be configured with different protection assemblies, that is, different grinding head specifications can be installed, or the same grinding head can be configured with different motor assemblies, which has strong applicability and versatility, and is conducive to reducing the cost of use; and by adding the transition assembly, it is possible to connect the motor assembly and the protection assembly into a whole, and the assembly is simple; in addition, the axial position of the grinding head connected to the protection assembly is adjustable, so that the length of the grinding head extending out of the protection assembly can be adjusted, which can adapt to different surgical needs and has strong practicality. Moreover, the grinding head is detachable, which makes it easy to disinfect and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall schematic diagram of a spinal grinding head device provided by the present invention;

[0018] Figure 2 An exploded view of a spinal grinding head device provided by the present invention

[0019] Figure 3 A cross-sectional view of a spinal grinding head device provided by the present invention;

[0020] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0021] Figure 5 A schematic diagram of a transition component of a spinal grinding head device provided by the present invention;

[0022] Figure 6 A cross-sectional view of a transition assembly of a spinal grinding head device provided by the present invention;

[0023] Figure 7 A schematic diagram of a first clamping structure of a spinal grinding head device provided by the present invention;

[0024] Figure 8 A schematic diagram of a transition main body sleeve of a spinal grinding head device provided by the present invention;

[0025] Fig. 9 A schematic diagram of a first locking torsion sleeve of a spinal grinding head device provided by the present invention;

[0026] Fig.10A schematic diagram of a first movable sleeve of a spinal grinding head device provided by the present invention;

[0027] Fig.11 A schematic diagram of a U-shaped spring piece of a spinal grinding head device provided by the present invention;

[0028] Fig.12 A schematic diagram of a motor assembly of a spinal grinding head device provided by the present invention;

[0029] Fig.13 A cross-sectional view of a motor assembly of a spinal grinding head device provided by the present invention;

[0030] Fig.14 A schematic diagram of a first clamping member of a spinal grinding head device provided by the present invention;

[0031] Fig.15 A schematic diagram of a protective component of a spinal grinding head device provided by the present invention;

[0032] Fig.16 A cross-sectional view of a protective component of a spinal grinding head device provided by the present invention;

[0033] Fig.17 A cross-sectional view of a grinding head main body sleeve of a spinal grinding head device provided by the present invention;

[0034] Fig.18 A schematic diagram of a second locking torsion sleeve of a spinal grinding head device provided by the present invention;

[0035] Fig.19 A schematic diagram of a second movable sleeve of a spinal grinding head device provided by the present invention;

[0036] Fig. 20 A schematic diagram of a second clamping member of a spinal grinding head device provided by the present invention;

[0037] Fig.21 A cross-sectional view of a locking sleeve of a spinal grinding head device provided by the present invention;

[0038] Fig. 22 A schematic diagram of the assembly of a second clamping member and a grinding head locking spindle of a spinal grinding head device provided by the present invention;

[0039] Fig.23 This is one of the use states of the second clamping structure of a spinal grinding head device provided by the present invention, and the figure shows that the grinding head is in a relaxed state;

[0040] Fig.24 This is the second use state of the second clamping structure of the spinal grinding head device provided by the present invention, and the figure shows that the grinding head is in the clamping state;

[0041] Fig.25 A schematic diagram of a grinding head of a spinal grinding head device provided by the present invention.

[0042] In the figure: 100, motor assembly; 101, motor housing; 102, motor; 103, transmission shaft; 104, first clamping member; 1040, first elastic chuck; 105, first elastic element; 106, motor fixing plate; 107, electrode needle; 108, coupling; 200, transition assembly; 201, transition main body sleeve; 2010, first spiral groove; 202, first locking torsion sleeve; 2020, first slide groove; 2021, arc groove; 203, first movable sleeve; 2030, first ball groove; 204, first ball; 205, U-shaped spring piece; 2050, snap-in sheet; 2051, snap-in groove; 300, protection assembly; 301, grinding head protection Sleeve; 302, grinding head main body sleeve; 3020, second spiral groove; 303, grinding head locking shaft; 3030, moving groove; 304, transmission rod; 305, second locking torsion sleeve; 3050, second slide groove; 306, second moving sleeve; 3060, second ball groove; 307, second clamping member; 3070, second elastic chuck; 3071, chuck inclined surface; 3072, U-shaped convex surface; 308, locking sleeve; 3080, push inclined surface; 3081, opening; 3082, connecting hole; 309, second elastic element; 310, slider; 311, second ball; 312, main body cover; 313, locking connecting sleeve; 400, grinding head; 401, U-shaped groove. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] like Figure 1-25 As shown, a spinal grinding head device provided by the present invention includes a motor assembly 100, a transition assembly 200, a protection assembly 300 and a grinding head 400, the motor assembly 100 and the transition assembly 200 are detachably connected, the transition assembly 200 and the protection assembly 300 are detachably connected, the protection assembly 300 is used to support the grinding head 400, the grinding head 400 is detachably connected to the protection assembly 300, and the axial position of the grinding head 400 connected to the protection assembly 300 is adjustable, and the motor assembly 100 is used to drive the grinding head 400 to rotate.

[0045] See Figure 2On the basis of the above structure, by detachably connecting the motor assembly 100 and the transition assembly 200, detachably connecting the transition assembly 200 and the protection assembly 300, and detachably connecting the grinding head 400 to the protection assembly 300, the components constituting the spinal grinding head device are all split into independent parts, so that the same motor assembly 100 can be configured with different protection assemblies 300, that is, different specifications of grinding heads 400 can be installed, or the same grinding head 400 can be configured with different motor assemblies 100, which has strong applicability and versatility and is conducive to reducing the cost of use; and by adding the transition assembly 200, it can connect the motor assembly 100 and the protection assembly 300 into a whole; in addition, the axial position of the grinding head 400 connected to the protection assembly 300 is adjustable, so that the length of the grinding head 400 extending out of the protection assembly 300 can be adjusted, which can meet the needs of surgery and has strong practicality. Moreover, the grinding head 400 is detachable, which makes it easy to disinfect and maintain.

[0046] It should be noted that the protection component 300 and the transition component 200 respectively have channels for inserting and rotating the grinding rod of the grinding head 400 so that the grinding head 400 can be transmitted and matched with the motor component 100; and the grinding head 400 at the front end of the grinding head 400 should be able to extend out of the protection component 300 to achieve the grinding purpose.

[0047] Preferably, the protection component 300 includes a grinding head protection cover 301, a grinding head main body cover 302 connected to the grinding head protection cover 301, a grinding head locking shaft 303 sleeved in the grinding head protection cover 301, and a transmission rod 304 arranged in the grinding head main body cover 302, the transition component 200 includes a transition main body cover 201, the motor assembly 100 includes a motor housing 101, a motor 102 arranged in the motor housing 101 and a transmission shaft 103 connected to the motor 102, one end of the transmission shaft 103 extending into the transition main body cover 201 is provided with a first clamping structure, one end of the transmission rod 304 is axially inserted into the first clamping structure and is detachably connected by the first clamping structure, the other end of the transmission rod 304 is movably connected to one end of the grinding head locking shaft 303, the other end of the grinding head locking shaft 303 is provided with a second clamping structure, and one end of the grinding head 400 is axially inserted into the second clamping structure and is detachably connected by the second clamping structure. The first clamping structure of this embodiment detachably connects the transmission shaft 103 of the motor assembly 100 and the transmission rod 304, and the second clamping structure detachably connects the locking spindle of the protection assembly 300 and the grinding head 400, which has the characteristic of simple structure.

[0048] Specifically, the first clamping structure includes a first locking torsion sleeve 202, a first movable sleeve 203, a first clamping piece 104 and a first elastic element 105. The first locking torsion sleeve 202 is rotatably sleeved on the transition main sleeve 201. The first clamping piece 104 is clamped on the transmission shaft 103. One end of the first clamping piece 104 is provided with a first elastic chuck 1040 for clamping the transmission rod 304. The first elastic element 105 is sleeved on the first clamping piece 104 and can press the first elastic chuck 1040. The first movable sleeve 203 is movably sleeved on the first The first movable sleeve 203 is on the elastic element 105, and one end of the first movable sleeve 203 is abutted against one end of the first elastic element 105. The one end of the first movable sleeve 203 can be axially moved toward the direction close to the first elastic clamp 1040 under the linkage of the first locking and twisting sleeve 202 to drive the first elastic element 105 away from the first elastic clamp 1040. The first elastic element 105 is used to provide a first elastic stress that prompts the first movable sleeve 203 to move toward the direction close to the first elastic clamp 1040, so that the first elastic element 105 presses against the first elastic clamp 1040.

[0049] In this embodiment, the first locking twisting sleeve 202 is rotated counterclockwise, and the first movable sleeve 203 moves axially toward the direction close to the first elastic clamp 1040 under the linkage of the first locking twisting sleeve 202. At this time, the first elastic clamp 1040 is not pressed by the first elastic element 105, and pops out of the transmission shaft 103, so that the transmission rod 304 is in a relaxed state, so that the motor assembly 100 can be removed from the transition assembly 200; when the transmission rod 304 is to be re-clamped, the first locking twisting sleeve 202 is reset. At this time, under the action of the first elastic element 105, the first movable sleeve 203 moves toward the direction close to the first elastic clamp 1040, so that the first elastic element 105 presses the first elastic clamp 1040, and the first elastic clamp 1040 re-clamps the transmission rod 304, so that the transmission rod 304 is locked in the transmission shaft 103. Preferably, three first elastic clamps 1040 are provided in this embodiment.

[0050] More specifically, the first clamping structure also includes a first ball 204, the outer wall of the first movable sleeve 203 is provided with a first ball groove 2030 for placing the first ball 204, the transition main sleeve 201 is provided with a first spiral groove 2010 for cooperating with the first ball 204, and the inner wall of the first locking torsion sleeve 202 is provided with a first slide groove 2020 adapted to the first ball 204, the ball is clamped in the first slide groove 2020, and the first ball 204 can slide along the first spiral groove 2010 under the linkage of the first locking torsion sleeve 202 to drive the first movable sleeve 203 to move axially. On the basis of the above structure, when the first locking and twisting sleeve 202 is rotated, the first ball 204 slides in the direction of the first spiral groove 2010. Since the first ball 204 is connected to the first movable sleeve 203, the first ball 204 can drive the first movable sleeve 203 to move axially; when the first locking and twisting sleeve 202 is rotated counterclockwise, the first ball 204 slides in the direction close to the second end of the first spiral groove 2010, so that one end of the first movable sleeve 203 moves in the direction close to the first elastic element 105, so that the first elastic clamp 1040 pops out toward the transmission shaft 103, and the transmission rod 304 is in a relaxed state; when the first locking and twisting sleeve 202 is rotated clockwise, the first ball 204 slides in the direction close to the first end of the first spiral groove 2010, so that one end of the first movable sleeve 203 moves in the direction away from the first elastic element 105, the first elastic element 105 presses the first elastic clamp 1040 again, and the transmission rod 304 is in a clamped state.

[0051] See Figure 16-24Preferably, the second clamping structure includes a second locking and twisting sleeve 305, a second movable sleeve 306, a second clamping piece 307, a locking sleeve 308, and a second elastic element 309; the second locking and twisting sleeve 305 is rotatably sleeved on the grinding head main sleeve 302, the second movable sleeve 306 is movably sleeved on the transmission rod 304, and the transmission rod 304 is provided with an abutting portion that abuts against the second movable sleeve 306. The second movable sleeve 306 can move axially and rotate under the linkage of the second locking and twisting sleeve 305. The transmission rod 304 is driven to move axially; the second clamping member 307 is clamped on the grinding head locking shaft 303, and one end of the second clamping member 307 is provided with a second elastic clamp 3070 for clamping the grinding head 400, and the locking sleeve 308 is movably sleeved on the second clamping member 307, and one end of the locking sleeve 308 can cooperate with the inclined surface of the second elastic clamp 3070 to clamp the grinding head 400. In this embodiment, the inner wall of the front end of the locking sleeve 308 is provided with a push inclined surface 3080, and the second elastic clamp 30 The second elastic chuck 3070 is provided with a chuck inclined surface 3071 matched with the push inclined surface 3080; a movable groove 3030 is provided at one end of the grinding head locking shaft 303, and a slider 310 for connecting with the locking sleeve 308 is provided in the movable groove 3030, and the other end of the transmission rod 304 is movably inserted into the movable groove 3030 and can push the slider 310 to move axially so that the locking sleeve 308 is away from the second elastic chuck 3070; the second elastic element 309 is sleeved on the grinding head locking shaft 303, and the second elastic element One end of the second elastic element 309 is in contact with the slider 310, and the second elastic element 309 is used to provide a second elastic stress that causes one end of the locking sleeve 308 to move toward the direction close to the second elastic clamp 3070, so that the one end of the locking sleeve 308 pushes the second elastic clamp 3070; the locking sleeve 308 is also provided with an opening 3081, and the second elastic clamp 3070 can pop out toward the opening 3081 when the front end of the locking sleeve 308 moves away from the second elastic clamp 3070.

[0052] In the present embodiment, when the length of the grinding head 400 needs to be adjusted, the second locking torsion sleeve 305 is first rotated to drive the second movable sleeve 306 to move axially, and the second movable sleeve 306 drives the transmission rod 304 to move in the direction close to the movable groove 3030, and the transmission rod 304 pushes the slider 310 to move along the axial positive direction of the movable groove 3030, and the slider 310 squeezes the second elastic element 309. At the same time, the slider 310 drives the front end of the locking sleeve 308 to move in the direction away from the second elastic clamp 3070. At this time, the locking sleeve 308 can no longer press the second elastic clamp 3070, and the second elastic clamp 3070 loses its pressing effect, so that the second elastic clamp 3070 pops out in the direction of the opening 3081. In this way, the second elastic chuck 3070 cannot clamp the grinding head 400, so that the grinding head 400 can adjust the length of the grinding head 400 extending out of the grinding head protection cover 301. After adjusting the length of the grinding head 400, release your hand. Under the action of the second elastic element 309, the slider 310 moves in the opposite direction of the axial direction of the moving groove 3030, and at the same time drives the front end of the locking sleeve 308 to move in the direction close to the second elastic chuck 3070. At this time, the push inclined surface 3080 of the locking sleeve 308 pushes the clamping inclined surface 3071 of the second elastic chuck 3070. Through the push-pushing cooperation of the inclined surfaces, the second elastic chuck 3070 presses against the inside of the grinding head locking shaft 303 to clamp the grinding head 400, thereby locking the grinding head 400 in the grinding head 400 locking spindle. The second clamping structure has the characteristics of simple structure and convenient operation. In addition, in this embodiment, the slider 310 is preferably a square pin, wherein the locking sleeve 308 is disposed in a connection hole 3082 for connecting with the slider 310, and the second elastic element 309 is preferably a spring.

[0053] Specifically, the second clamping structure also includes a second ball 311, the outer wall of the second movable sleeve 306 is provided with a second ball groove 3060 for placing the second ball 311, the grinding head main body sleeve 302 is provided with a second spiral groove 3020 for cooperating with the second ball 311, and the inner wall of the second locking and twisting sleeve 305 is provided with a second slide groove 3050 adapted to the second ball 311. The second ball 311 is clamped in the second slide groove 3050, and the second ball 311 can slide along the second spiral groove 3020 under the linkage of the second locking and twisting sleeve 305 to drive the second movable sleeve 306 to move axially.

[0054] In this embodiment, when the second locking twisting sleeve 305 is rotated, the second ball 311 is driven to slide along the second spiral groove 3020. Since the second ball 311 is arranged on the second movable sleeve 306, the second ball 311 can drive the second movable sleeve 306 to move axially. In addition, when the second locking twisting sleeve 305 is rotated counterclockwise, the second ball 311 slides from the direction close to the second end of the second spiral groove 3020, driving the second movable sleeve 306 to move in the positive axial direction, that is, the second movable sleeve 306 drives the transmission rod 304 to move in the direction close to the movable groove 3030. When the second ball 311 completely slides to the second end of the second spiral groove 3020, the second elastic chuck 3070 pops out in the direction of the opening 3081, and the locking sleeve 308 does not continue to push the second elastic chuck 3070. At this time, the second elastic chuck 3070 cannot clamp the grinding head 400; when the second locking twisting sleeve 305 is rotated clockwise, the second ball 311 slides from the direction close to the second end of the second spiral groove 3020, driving the second movable sleeve 306 to move in the positive axial direction, that is, the second movable sleeve 306 drives the transmission rod 304 to move in the direction close to the movable groove 3030. When the second ball 311 completely slides to the second end of the second spiral groove 3020, the second elastic chuck 3070 pops out in the direction of the opening 3081, and the locking sleeve 308 does not continue to push the second elastic chuck 3070. At this time, the second elastic chuck 3070 cannot clamp the grinding head 400; When the second moving sleeve 306 moves in the direction close to the first end of the second spiral groove 3020, the second moving sleeve 306 is driven to move in the opposite direction of the axial direction. When the second ball 311 completely slides to the first end of the second spiral groove 3020, the second ball 311 and the second moving sleeve 306 are reset. At this time, since the transmission rod 304 loses its resistance, under the action of the second elastic element 309, the slider 310 drives the front end of the locking sleeve 308 to slide in the direction close to the second elastic clamp 3070, and the pushing inclined surface 3080 of the locking sleeve 308 pushes the clamping inclined surface 3071 of the second elastic clamp 3070, so that the second elastic clamp 3070 re-clamps the grinding head 400. It can be understood that the first end and the second end of the second spiral groove 3020 of this embodiment are respectively provided with a positioning portion for limiting the second ball 311 from continuing to slide.

[0055] See Fig.25 Specifically, the connecting section of the grinding head 400 extending into the locking spindle of the grinding head 400 is provided with a plurality of U-shaped grooves 401, and the plurality of U-shaped grooves 401 are arranged at intervals along the length direction of the grinding head 400, and the second elastic clamp 3070 is provided with a U-shaped convex surface 3072 adapted to the U-shaped groove 401. By arranging a plurality of U-shaped grooves 401 at the connecting section of the grinding head 400, so as to match the U-shaped convex surface 3072 of the second elastic clamp 3070, the second elastic clamp 3070 can further clamp the grinding head 400. Of course, the connecting section of the grinding head 400 can also be provided with other shapes, as long as it can be clamped with the second elastic clamp 3070. In addition, in the present embodiment, two second elastic clamps 3070 are provided, and the two second elastic clamps 3070 are symmetrically arranged.

[0056] Preferably, the transition main body sleeve 201 is clamped with a U-shaped spring piece 205, one end of the U-shaped spring piece 205 is provided with a clamping piece 2050, and the inner wall of the first locking and twisting sleeve 202 is provided with an arc groove 2021 clamped with the clamping piece 2050; the U-shaped spring piece 205 is provided with a clamping groove 2051, and the grinding head main body sleeve 302 is provided with a main body cover 312, and the main body cover 312 is provided with a clamping tooth for clamping with the clamping groove 2051. By providing the clamping groove 2051 on the U-shaped spring piece 205, the grinding head 400 assembly can be clamped on the transition main body sleeve 201, so that the transition assembly 200 and the grinding head 400 assembly are connected into one; in addition, by providing a clamping block connected with the first locking and twisting sleeve 202 on the U-shaped spring piece 205, the U-shaped spring piece 205 and the first locking and twisting sleeve 202 are connected together.

[0057] Preferably, the motor 102 is detachably mounted in the motor housing 101, and the motor housing 101 is threadedly connected to the transition main body sleeve 201. Specifically, the motor 102 is detachably mounted in the motor housing 101 through the motor fixing plate 106, so that the motor 102 can be easily replaced at any time; in addition, the motor 102 is connected to the external power supply through the electrode needle 107, and the power is transmitted to the transmission shaft 103 through the coupling 108, and the structure is compact and simple.

[0058] Specifically, the motor 102 of this embodiment is a brushless motor. This embodiment uses a brushless motor as the driving power of the grinding head 400, and the brushless motor has the characteristics of low noise, small loss, high efficiency, long service life, and is easy to maintain.

[0059] Preferably, the protection assembly 300 further includes a locking connection sleeve 313 for connecting the grinding head protection sleeve 301 and the grinding head main body sleeve 302. The locking connection sleeve 313 can be rotatably sleeved on the grinding head protection sleeve 301 and can lock the grinding head protection sleeve 301. Specifically, the grinding head protection sleeve 301 is provided with a first clamping piece, the locking connection sleeve 313 is provided with a limiting surface abutting against the first clamping piece, the inner wall of the locking connection sleeve 313 is provided with a second clamping piece, and the outer wall of the grinding head main body sleeve 302 is provided with a slot matched with the second clamping piece. By providing the locking connection sleeve 313, the grinding head protection sleeve 301 and the grinding head main body sleeve 302 are connected into a whole.

[0060] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A spinal grinding head device, characterized in that: The invention comprises a motor assembly, a transition assembly, a protection assembly and a grinding head, wherein the motor assembly is detachably connected to the transition assembly, the transition assembly is detachably connected to the protection assembly, the protection assembly is used to support the grinding head, the grinding head is detachably connected to the protection assembly, and the axial position of the grinding head connected to the protection assembly is adjustable, and the motor assembly is used to drive the grinding head to rotate; The protection component comprises a grinding head protection cover, a grinding head main body cover connected to the grinding head protection cover, a grinding head locking shaft sleeved in the grinding head protection cover, and a transmission rod arranged in the grinding head main body cover, the transition component comprises a transition main body cover, the motor component comprises a motor housing, a motor arranged in the motor housing and a transmission shaft connected to the motor, one end of the transmission shaft extending into the transition main body cover is provided with a first clamping structure, one end of the transmission rod is axially inserted into the first clamping structure and is detachably connected by the first clamping structure, the other end of the transmission rod is movably connected to one end of the grinding head locking shaft, the other end of the grinding head locking shaft is provided with a second clamping structure, one end of the grinding head is axially inserted into the second clamping structure and is detachably connected by the second clamping structure; The first clamping structure comprises a first locking and twisting sleeve, a first movable sleeve, a first clamping piece and a first elastic element, the first locking and twisting sleeve being rotatably sleeved on the transition main sleeve, the first clamping piece being clamped on the transmission shaft, one end of the first clamping piece being provided with a first elastic clamping head for clamping the transmission rod, the first elastic element being sleeved on the first clamping piece and being able to press the first elastic clamping head, the first movable sleeve being movably sleeved on the first elastic element, and one end of the first movable sleeve being pressed against one end of the first elastic element, one end of the first movable sleeve being axially moved in a direction close to the first elastic clamping head under the linkage of the first locking and twisting sleeve to drive the first elastic element away from the first elastic clamping head, the first elastic element being used to provide a first elastic stress that prompts the first movable sleeve to move in a direction close to the first elastic clamping head, so that the first elastic element presses the first elastic clamping head; The second clamping structure comprises a second locking torsion sleeve, a second movable sleeve, a second clamping piece, a locking sleeve, and a second elastic element; the second locking torsion sleeve is rotatably sleeved on the grinding head main body sleeve, the second movable sleeve is movably sleeved on the transmission rod, the transmission rod is provided with an abutment portion that abuts against the second movable sleeve, the second movable sleeve moves axially under the linkage of the second locking torsion sleeve and drives the transmission rod to move axially; the second clamping piece is clamped on the grinding head locking shaft, and one end of the second clamping piece is provided with a second elastic chuck for clamping the grinding head, the locking sleeve is movably sleeved on the second clamping piece, and one end of the locking sleeve cooperates with the inclined surface of the second elastic chuck to clamp the grinding head; the grinding A movable groove is provided at one end of the head locking shaft, and a slider for connecting with the locking sleeve is provided in the movable groove, and the other end of the transmission rod is movably inserted into the movable groove and can push the slider to move axially so that the locking sleeve is away from the second elastic clamp; the second elastic element is sleeved on the grinding head locking shaft, and one end of the second elastic element abuts against the slider, and the second elastic element is used to provide a second elastic stress that causes one end of the locking sleeve to move in a direction close to the second elastic clamp, so that one end of the locking sleeve pushes the second elastic clamp; the locking sleeve is also provided with an opening, and the second elastic clamp pops out in the direction of the opening when the front end of the locking sleeve moves away from the second elastic clamp.

2. A spinal grinding head device as claimed in claim 1, characterized in that: The first clamping structure also includes a first ball, the outer wall of the first movable sleeve is provided with a first ball groove for placing the first ball, the transition main sleeve is provided with a first spiral groove for cooperating with the first ball, and the inner wall of the first locking torsion sleeve is provided with a first slide groove adapted to the first ball, the ball is clamped in the first slide groove, and the first ball slides along the first spiral groove under the linkage of the first locking torsion sleeve to drive the first movable sleeve to move axially.

3. A spinal grinding head device as claimed in claim 1, characterized in that: The second clamping structure also includes a second ball, the outer wall of the second movable sleeve is provided with a second ball groove for placing the second ball, the grinding head main body sleeve is provided with a second spiral groove for cooperating with the second ball, the inner wall of the second locking and torsion sleeve is provided with a second slide groove adapted to the second ball, the second ball is clamped in the second slide groove, and the second ball slides along the second spiral groove under the linkage of the second locking and torsion sleeve to drive the second movable sleeve to move axially.

4. A spinal grinding head device as claimed in claim 1, characterized in that: The transition main body sleeve is clamped with a U-shaped spring piece, one end of the U-shaped spring piece is provided with a clamping piece, and the inner wall of the first locking and twisting sleeve is provided with an arc groove clamped with the clamping piece; the U-shaped spring piece is provided with a clamping groove, the grinding head main body sleeve is provided with a main body cover, and the main body cover is provided with clamping teeth for clamping with the clamping groove.

5. A spinal grinding head device as claimed in claim 1, characterized in that: The motor is detachably mounted in the motor housing, and the motor housing is threadedly connected to the transition main body sleeve.

6. A spinal grinding head device as claimed in claim 5, characterized in that: The motor is a brushless motor.

7. A spinal grinding head device as claimed in claim 2, characterized in that: The protection component also includes a locking connection sleeve for connecting the grinding head protection sleeve and the grinding head main body sleeve. The locking connection sleeve can be rotatably sleeved on the grinding head protection sleeve and can lock the grinding head protection sleeve.

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